Morristown High School -- the scene of two days of confrontations between white and black students -- will remain closed until Monday while school officials, teachers, students and community leaders strive to resolve the crisis.

Dr. Harry W. Wenner, superintendent of the Morris School District, said yesterday his staff will conduct public meetings today and tomorrow with students and parents to explain the rules and regulations governing the school's reopening.

Most of those new conditions were explained to 1,300 parents and students Tuesday night at a special board of education meeting, where board president Ann Kolb declared further violence would not be tolerated.

Mrs. Kolb said then that to enforce the new get-tough policy, students will be admitted to the school building only through four doors and only after presenting identification cards to monitors.

In addition, plainclothes policemen will monitor the halls, and Lt. George Jenkins, the police department's community relations officer and a black, will set up an office inside the school.

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The board president vowed Tuesday that those who cause trouble "will be arrested and prosecuted . . . we will make this school safe for all," she said.

The city-block long high school houses 2,300 students daily, 400 of whom are black.

The Morris District comprises Morristown, which has a black population of over 20 percent, and Morris Township, which virtually surrounds Morristown and which is predominantly white. Approximately 200 Morris Plains high schoolers attend the school, as well as a handful of Harding Township youths. They are white.

Last Thursday night, a racial brawl involving about 200 youths erupted at a church carnival, and on Friday scattered fighting between blacks and whites in and around the high school caused Principal Richard Hemmer to close early and to cancel Friday and Saturday night activities.

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On Monday, several sporadic incidents between whites and blacks led to over 400 students confronting each other on Early Street in front of the building.

Some 75 policemen, many with riot gear and clubs, waded in and around the angry crowd, but eventually whites and blacks separated and order was restored.

Eight students were injured Monday, but none seriously.

A series of meetings took place throughout the high school yesterday, with most who participated expressing optimism the crisis has past.

The administrators and faculty met for about an hour in the auditorium. They were joined by about 150 students for another two-hour session.

Following lunch, small groups met to discuss such topics as entrance control in the building, grievance boards and judicial panels in the future, curriculum (with some advocating more black studies being integrated into the regular history courses), the relationship between the school and the community, and the school's guidance program.

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Hemmer said each group made recommendations to the administration at a final meeting, and he said the information would be used by the staff in mapping any possible future changes.

Wenner said he was "optimistic we're working in the right direction," but he cautioned against confusing the short-term goal of maintaining safety at the school and tackling the "more long-range frustrations and problems being aired."

Meanwhile the police continue to play a visible, but low-key, role.

Lt. Robert White said no one has been arrested this week stemming from the incidents at the school, but he said leads are still being checked.

White, Jenkins and Capt. William Pierson have been meeting regularly with the board and the administration as they map their new regulations.

And White said the 16-year-old white youth who was arrested Friday and charged with trespassing into the school with a knife and with intent to assault, was back in custody. He explained a juvenile court released him Tuesday, after three days in the county's youth center, but added the judge ordered him picked up again when it was learned he violated a court-imposed curfew.

Two U.S. Justice Department officials from the agency's Community Relations Bureau in New York arrived in Morristown yesterday, and, according to Jenkins, they will be working with various community leaders in an effort to aid the police in defusing the situation.

Jenkins said one of the agents, Fletcher Graves, a black, will be contacting black leaders, while Joe Ford, who is white, will be doing the same in the white community.

Graves described his role as "conciliation and mediation."

And as a precaution, police examined student lockers yesterday, apparently looking for weapons.